James otindt



H J. GU-DDY. Making White Lead,

lined July 19, 1870..

Pate

whim first;

@ we dip-r12;

To all whom it mar concern;

[JAMES FOUDDY, or rrrcrsjcun e; PENN SYLVANlA f Letters Pat No. 1Q5,431, dated J yf e 1870- The Schedu'lofrefen'ed to in these I|etters Patent and making an of the same Be it known that'I, JAMES GUDDY, of Pittsburg,

in the State of Pennsylvania, have invented an Improvemeut in-lthe Mannf'actnreof White Lead; and

and exact description of the same.

Ido hereby declare'the following to be a full, clear,-

J My invention consists in an, economical and rapid method of converting metallic lead into white lead. ,My invention further consists in a revolviugtahle or set'of tables, org shelves, attached to an uprightrevolvingshaft within a chamber, and-upon which thin sheets of metalliclead are spread; and of an apparatus for sprinkling vinegarover the same during the process of corrosion and conversion intowhite'lead. h In order to enable others to practice myinvention,

I will now-proceed todescribe3a modeof carrying the same into eflect, reference being had -to the accom'-' panying drawing, which forms'apart of this specification, and in whichr I Figure 1 is an elevation and, cross-section of an ap paratuswhich may beused for carrying my invention into efi'ect. J

v Figure 2 is a ground plan of the same. h t -A is a chamber, built of brick, stone, wood, or any h other suitable material, with a-large'door thatis used 1 'when filling or emptying 'the sanie, and small doors that are occasionally openedwhen tests, to show the progress of corrosion, are reqniredto be taken out. r B is a vertical revolving shaft, with one or more shelves or tables made of slats of wood, attached at fixed distances, upon which are spreadthe sheets of a metallic ,leady they are then oxidized" by a jet of steam from the pipe-0,,when they are ready to'receivea shower'of vinegar from the pipe D, through the stop-cccks-E EE E, as shown in thedrawing.

1 The shaft B stands upon apivot'f whichjisset into astep, F, and which may be driven by miter, bevel,

or spur gearing, or any other mechanical arrangement is now, thrown into gear, and commences turn ing round,when the stop-cocks E E E E'are opencd, and through the horizontal pipes GGG G, (which are perforated with small holes, throughout their length, and are closed at the ends,) a light shower of vinegar is thrown equally over the lead upon each or all of the shelves, while the shaftcc ntinnes revolving, andthe lead'upon one or more shelves can thus'be treated with its required portion of vinegar, or the contents of the whole of the shelves can be sprinkled simultaneously.- v p r The lead upon the shelves or tables having received theshower of vinegar, the revolving shaft'is thrown out of gear, and a supply of carbonic-acid gas is driven into the chamber by a blast-cylindeIi-or' any of the usual mechanical means, through the pipe K,jand these operationsare continued until the corrosion of the metallic lead is completed. v

Whenever the contents of the shelves again require to be sprinkled with vinegar, the shaft isthrown into gear and started revolving, and when the lead has {been sufficiently moistened then thrown out of gear as before.

r I do not claim any particular fOlTlIl of chamber. It.

desire to se- The apparatus above described for sprinkling the vinegar on the sheets of lead, in combinationwith the horizontal revolving shelves or tables, substantially-as and for the purpose described.

v JAMES OUDDY.

Witnesses:

\ Gno. S. Snnnnn,

JOHN OUTLAN. 

